Kashrus Halacha
Rabbi Dovid Cohen
Laws of kosher as they apply in contemporary times, taught by Rabbi Dovid Cohen of cRc Kosher.
Shiurim
- How Clean is Clean, Microwaves, Dishwashers (Kashering #28 - Shulchan Aruch 451:18)
Rabbi Dovid Cohen
How clean is clean Microwaves & Dishwashers
- Why Food Requires Hashgachah (Kosher Classes #20)
Rabbi Dovid Cohen
Why Food Requires Hashgachah
- Hag'alah Short Course (Pesach #12)
Rabbi Dovid Cohen
Hag'alah Short Course - Introduction - Decide - just hag'alah, materials - Clean - rust, holes, cracks &crevices, necks - Aino ben yomo - Boiling water -general, pot of water, pour boiling water - Rinse See the video of the shiur at here
- Trucking (Kashering #23 - Shulchan Aruch 451:13)
Rabbi Dovid Cohen
Welds Trucking
- Butter (Kosher Dairy #19 - Shulchan Aruch 115:3)
Rabbi Dovid Cohen
Butter Three opinions Butter nowadays
- Whole Wheat Flour (Hafrashas Challah #8 - Shulchan Aruch 324:3)
Rabbi Dovid Cohen
Whole Wheat Flour Flour production Recombination method Yerushalmi's explanation Germ and wheat gluten
- Wine and Alcohol (Hashgachah Practicum #47 - Consumer H)
Rabbi Dovid Cohen
Wine and Alcohol: Wine (stam yayin, mevushal); Secondary halachos (bracha, from concentrate, Pesach seder, music); Alcoholic beverages (ingredients, equipment, aging, chametz she'avar alav haPesach). See seforim by Rabbi Cohen at
- Glatt and Beis Yosef (Hashgachah Practicum #25 - Meat B)
Rabbi Dovid Cohen
Glatt and Beis Yosef: Introduction; Procedure (access diaphram/tarpash, bedikas pnim, bedikas chutz); Methods of checking (הכנסת יד הבודק, hagbah, miuch and mishmush, klipah); Glatt; Chalak - Beis Yosef; Sephardim; Dakos. See seforim by Rab
- Comparing Fish Fillets (Bitul and Blios #37 - Shulchan Aruch YD 101:7-8)
Rabbi Dovid Cohen
Comparing Fish Fillets: Background; Fish fillets; Skin tags. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Libun Gamur (Hashgachah Practicum #58 - Kashering E)
Rabbi Dovid Cohen
Libun Gamur: When; How; Libun gamur vs. libun kal. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Papain (Bitul and Blios #63 - Shulchan Aruch YD 110:9)
Rabbi Dovid Cohen
Papain: Papaya; Papain; Peel; Papaya Revisited; Eggplant Plus. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Utensils Which Did Not Have Tevillah (Tevillas Keilim #20 - Shulchan Aruch 120:11-13)
Rabbi Dovid Cohen
Utensils which did not have tevillah Buy the book at www.kashrushalacha.com
- Part of Kli Touched Issur (Kashering #21 - Shulchan Aruch 451:12)
Rabbi Dovid Cohen
Only part of the kli touched issur How far does ta'am travel
- Gevinas Yisroel on Acid-Set Cheese (Kosher Dairy #11 - Shulchan Aruch 115:2)
Rabbi Dovid Cohen
Gevinas Yisroel on Acid-set Cheese American minhag Rennet in acid-set cheese Skyr & bakers cheese
- Cheese Finishing (Kosher Dairy #18 - Shulchan Aruch 115:2)
Rabbi Dovid Cohen
Cheese Finishing Pressing Salting and Brining (dry salting, brine salting) Cutting and Packaging (kashering)
- Is Dough Tevel Before Hafrashah (Hafrashas Challah #4 - Shulchan Aruch 323:1)
Rabbi Dovid Cohen
Is dough tevel before hafrasha
- Tata'ah Gavar (Bitul and Blios #53 - Shulchan Aruch YD 105:3)
Rabbi Dovid Cohen
Tata'ah Gavar (תתאה גבר) : Basics; Tumbler; Heat sealer; Shrink tunnel. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Chatichah Hariuyah Lehiskabed (Bitul and Blios #36 - Shulchan Aruch YD 101:1)
Rabbi Dovid Cohen
Chatichah Hariuyah Lehiskabed (חתיכה הראויה להתכבד) : Basic halachos; Definition; Raw meat; Blends (part is part is not, only together). See seforim by Rabbi Cohen at www.kashrushalacha.com
- Worms in Fish (Kosher Classes #13)
Rabbi Dovid Cohen
Worms in Fish
- Issah Ha'asuyah Lechalek (Hafrashas Challah #17 - Shulchan Aruch 326:1-2)
Rabbi Dovid Cohen
Issah Ha’asuyah Lechalek Basic rules Basis and logic Applications
- Non-Kosher Materials [Part 2] (Hashgachah Practicum #9 - Ingredients C)
Rabbi Dovid Cohen
Non-Kosher Materials - Part 2 Agricultural Products; Ma'achalei Akum - bishul akum, pas akum, stam yayin; Grains; Chodosh / yoshon; Hafrashas challah; Time and Place; Pesach - chametz, chametz she'avar alav haPesach, Jewish distributors; Ar
- Meat Basics (Hashgachah Practicum #24 - Meat A)
Rabbi Dovid Cohen
Meat Basics: Shechitah; Teraifos; Nikkur; Melichah; Simanim. See seforim by Rabbi Cohen at www.kashrushalacha.com
- High School Kosher Q&A [Part 2] (Kosher Classes #61)
Rabbi Dovid Cohen
High School Q&A [Part 2]; Hot dogs in stadium; Vaping; Toothpaste and mouthwash; Beverages; Shellac See seforim by Rabbi Cohen at www.kashrushalacha.com
- Belilah Raccah and Belilah Avah [Part 1] (Hafrashas Challah #22 - Shulchan Aruch 329:1-3)
Rabbi Dovid Cohen
Belilah Raccah and Belilah Avah (part 1) Rash and Rabbeinu Tam (donuts, pasta, pet food)
- Kashrus Scandals (Bitul and Blios #62 - Shulchan Aruch YD 110:5)
Rabbi Dovid Cohen
Kashrus Scandals: Assumptions; Issues - Four Questions; Raw meat in store; Prepared food in store; Food taken home; Kashering. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Eggs (Bishul Yisroel #35 - Shulchan Aruch 113:14)
Rabbi Dovid Cohen
Eggs Edible Raw Oleh al Shulchan Melachim Buy the book at www.kashrushalacha.com
- Wraps (Q&A 35)
Rabbi Dovid Cohen
Wraps See seforim by Rabbi Cohen at www.kashrushalacha.com
- Yoshon Basics (Kosher Classes #34)
Rabbi Dovid Cohen
Yoshon Basics Basics Guide to Chodosh Details Yoshon in Chicago
- Berries (Q&A 98)
Rabbi Dovid Cohen
Berries See seforim by Rabbi Cohen at www.kashrushalacha.com
- Pet Food (Q&A 50)
Rabbi Dovid Cohen
Pet Food See seforim by Rabbi Cohen at www.kashrushalacha.com
- Filet Mignon (Q&A 20)
Rabbi Dovid Cohen
Filet Mignon: See seforim by Rabbi Cohen at www.kashrushalacha.com
- Ta'anis Esther in Taiwan (Kosher Classes #37)
Rabbi Dovid Cohen
Ta’anis Esther in Taiwan Halachic dateline
- Irreligious Jews (Pas Yisroel #1 - Shulchan Aruch 112:1)
Rabbi Dovid Cohen
Irreligious Jews Introduction Chasnus Mumar Related Issues Buy the book at www.kashrushalacha.com
- Shellac (Q&A 31)
Rabbi Dovid Cohen
Shellac See seforim by Rabbi Cohen at www.kashrushalacha.com
- End of Shemittah (Hashgachah Practicum #21 - Shemittah D)
Rabbi Dovid Cohen
End of Shemittah: Shemittas kesafim; Pruzbul; Arba minim (aravah, hadassim, esrog, lulav); Post-shemittah; See seforim by Rabbi Cohen at www.kashrushalacha.com
- Waiting 12 Months (Kashering #38 - Shulchan Aruch 452:1)
Rabbi Dovid Cohen
Waiting 12 months
- First Time Making Pesach (Pesach #38)
Rabbi Dovid Cohen
First time making Pesach Schedule Cleaning the house Shopping Kashering Switching over Erev Pesach Seder preparations Chametz after Pesach
- Joulies (Kosher Classes #16)
Rabbi Dovid Cohen
Joulies
- Zei'ah (Bitul and Blios #9 - Shulchan Aruch 92:8)
Rabbi Dovid Cohen
Zei'ah Basic halachos; Stovetop; Oven; Microwave oven; Hookah; e-Cigarettes; Zei'ah b'almah; Media. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Machvas (Kashering #19 - Shulchan Aruch 451:11)
Rabbi Dovid Cohen
Machvas
- Esrog of Shemittah (Kosher Classes #32)
Rabbi Dovid Cohen
Esrog of Shemittah
- Sushi (Q&A #59)
Rabbi Dovid Cohen
Sushi See seforim by Rabbi Cohen at www.kashrushalacha.com
- Waiting for Pas Yisroel (Pas Yisroel #17 - Shulchan Aruch 112:16)
Rabbi Dovid Cohen
Waiting for Pas Yisroel Four mil or one mil? Measuring a mil Mechaber's opinion 112:8 and 112:16 Aseres yimei teshuvah Buy the book at www.kashrushalacha.com
- Hag'alah Instead of Ne'itzah (Kashering #4 - Shulchan Aruch 451:3)
Rabbi Dovid Cohen
Hag'alah instead of ne'itzah Kashering from meat to dairy [Part 1]
- Chalav Yisroel Via Video Camera (Kosher Dairy #8 - Shulchan Aruch 115:1)
Rabbi Dovid Cohen
Chalav Yisroel via Video Camera "Seeing" via video When to watch Technical hurdles Computerized farms
- Chocolate (Q&A 97)
Rabbi Dovid Cohen
Chocolate See seforim by Rabbi Cohen at www.kashrushalacha.com
- Bionaphtha (Kosher Anthology 4)
Rabbi Dovid Cohen
Bionaphtha: Naphtha and bionaphtha; Legal fictions (mass balance transfer, ethylene pipeline); Nishtaneh (machlokes, questions, and answers); Masriach, min b'mino, known heter, human intervention; Nifsal mei'achilah. See seforim by Rabbi Co
- Sefichin for Consumers (Shemittah #10 - Avodas Karka D)
Rabbi Dovid Cohen
Sefichin for Consumers Applications based on logic of issur - fruit, four fields, grows wild, animal food, field of non-Jew Other Details - olei Mitzrayim, hana'ah, items without kedushas shevi'is, harvested in 8th year But the book at www.
- Cleaning Chalif Between Shechitos (Meat and Poultry 9 - Chalif B)
Rabbi Dovid Cohen
Cleaning chalif between shechitos - Checking the chalif - Chalif previously used for teraifah - Sterilization of the chalif Video available at https://kshr.us/CleanChalif
- Mei Raglayim (urine) (Animal Products #3 - Shulchan Aruch 81:1)
Rabbi Dovid Cohen
Mei Raglayim (urine) Coffee from elephant dung Premarin
- Halachic Issues of Heter Mechirah [Part 2] (Shemittah #19 - Heter Mechirah C)
Rabbi Dovid Cohen
Inherent Halachic Issues Part 2 - Lo Sechanem Shelichus is required Lo sechanem to sell land Sheliach lid'var aveirah Invalidates the shelichus Buy the book at www.kashrushalacha.com
- Materials [Part 1] (Tevillas Keilim #1 Shulchan Aruch 120:1a)
Rabbi Dovid Cohen
Materials (Part 1) - Gemara - Metal - Glass Buy the book at www.kashrushalacha.com .
- Minhag to Cook Three Eggs (Eggs #7 - 86:5-6b)
Rabbi Dovid Cohen
Minhag to Cook Three Eggs - Reason for the minhag - Egg laid on Yom Tov - Water in the egg pot
- Davar Hama'amid (part 2) [Alcoholic Beverages #15 - Shulchan Aruch 114:6]
Rabbi Dovid Cohen
Davar Hama'amid (part 2) Question from Mishnah; Pri Chadash; Chavos Da'as; Pnei Yehoshuah; Difference in nomenclature Buy the book at www.kashrushalacha.com
- Zei'ah, Hevel, and Reichah (Kashering #24 - Shulchan Aruch 451:14)
Rabbi Dovid Cohen
Zei'ah, hevel and reichah Hood or cover over oven or kettle
- Reason for the Issur (Kosher Dairy #2 - Shulchan Aruch 115:1)
Rabbi Dovid Cohen
Reason for the Issur Chalav akum Need for the takanah Taste of non-kosher milk
- Office Parties [Alcoholic Beverages #4 - Shulchan Aruch 114:1]
Rabbi Dovid Cohen
Office Parties Aivah Iggeros Moshe Rambam Buy the book at www.kashrushalacha.com
- Flavors (Hashgachah Practicum #43 - Ingredients F)
Rabbi Dovid Cohen
Flavors: Components (active vs. inactive, non-certified); Types (natural vs. artificial, liquid vs. powder); Ingredients. See seforim by Rabbi Cohen at www.kashrushalacha.com
- Vertical Farming (Q&A 73)
Rabbi Dovid Cohen
Vertical Farming See seforim by Rabbi Cohen at www.kashrushalacha.com
- Animal Products (Hashgachah Practicum #59 - Ingredients J)
Rabbi Dovid Cohen
Animal Products: Yotzeh vs. Pirshah; Shellac and Carmine; Bee Products (honey, royal jelly, pollen, beeswax, propolis); Eggs; Yotzeh of a kosher animal; Colostrum; Lanolin. See seforim by Rabbi Cohen at www.kashrushalac